Question

suma dintre patratul unui nr intreg si cubul

Answer 1

$x^{2} + x^{3}=-18\ \textless \ =\ \textgreater \ x^{2} + x^{3}+18=0\ \textless \ =\ \textgreater \ (x+3)( x^{2} -2x+6)=0 \\ =\ \textgreater \ \left \{ {{x+3=0} \atop { x^{2} -2x+6=0}} \right. =\ \textgreater \ \left \{ {{x=-3}$